Process for the production of fuel gas low in carbon monoxide

Claim 1

A PROCESS FOR DIRECTLY PRODUCING PURIFIED LOW CARBON MONOXIDE CONTENT FUEL GAS OF DENSITY LOWER THAN COKE-OVEN GAS FROM HOT CRUDE FUEL GAS HIGH IN CARBON MONOXIDE AND ATTENDANT IMPURITIES OBTAINED BY PRESSURE GASIFICATION OF SOLID CARBON-CONTAINING FUELS WITH STEAM AND OXYGEN WHICH COMPRISES COOLING SAID HOT CRUDE GAS INCLUDING UNUSED STEAM THEREIN TO A TEMPERATURE OF FROM ABOUT 160 TO 2000*C. UNDER PRESSURE TO SEPARATE IMPURITIES SSUCH AS HIGH BOILING HYDROCARBON FRACTIONS, IOLS TARS AND DUST, REMOVING SAID IMPURITIES FOR SAID CRUDE GAS AND SAID UNUSED STEAM, HEATING THE COOLED CRUDE GAS AND SAID UNUSED STEAM TO A TEMPERATURE BETWEEN 250 AND 400*C., CONDUCTING THE HEATED CRUDE GAS AND SAID UNUSED STEAM OVER A CONVERSION CATALYST TO CONVERT THE HIGH CARBON MONOXIDE CONTENT AND STEAM UNUSED IN THE PRESSURE GASIFICATION TO CARBON DIOXIDE AND HYDROGEN SUBSTANTIALLY REMOVING RESIN-FORMERS AND SULPHUR COMPOUNDS DURING SAID CONVERSION, AND THEREAFTER RECOVERING THE PURIFIED LOWER CARBON MONOXIDE CONTENT FUEL GAS.